How to compress a Folder uses lzma sdk?

Question

http://www.7-zip.org/sdk.html
I can uses it compress a file, but can not find function of compress a Folder

Which version of Delphi? Would you consider ZIP which was added in XE? — David Heffernan, Apr 21 '12 at 16:08

score 2 · Answer 1 · edited May 23 '17 at 12:13

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You'll have to create a .7z archive, then include all files of the folder within. There is no direct "folder" compression: just compression of files. If you store a (relative) folder name within the file name (e.g. 'FolderName\FileName'), the folder 'FolderName' will appear within the archive.

You have within the SDK a ANSI-C compatible source code for 7z decompression with example. You'll have to adapt it to add all files of the folder to the archive (using FindFirst / FindNext / FindClose and recursion if you want the sub-folder to be included).

Edit: In fact, there is no .7z writing in the sdk. Only opening/extraction from a .7z archive within the sdk. You'll have to code it by hand... So perhaps the Using 7-Zip from Delphi? answer will help you here.

edited May 23 '17 at 12:13

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answered Apr 21 '12 at 16:47

Arnaud Bouchez

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Does 7 zip not have archive/directory features? – David Heffernan Apr 22 '12 at 09:42
lzma sdk not have archive/directory features – babaloveyou Apr 23 '12 at 08:36
@DavidHeffernan In the SDK, you have two levels: 1. lzma compression (over stream or buffer); 2. .7z archive format. The .7z archive format does handle archive/directory features. – Arnaud Bouchez Apr 23 '12 at 13:48

How to compress a Folder uses lzma sdk?

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